Who owns MAC prefix 4CFAC9?

4CFAC9 is registered to BWS IoT in the IEEE MA-L registry.

What devices use 4CFAC9?

Any network device with a MAC address starting 4C:FA:C9 was manufactured by or for BWS IoT.

MA-L · OUI prefix

BWS IoT

Any MAC address starting 4C:FA:C9 is registered to BWS IoT in BR.

OUI prefix	4CFAC9
Vendor	BWS IoT
Registry	MA-L (24-bit, large block)
Country	BR
Example MAC	4C:FA:C9:00:00:00

What this means

The IEEE assigned the MA-L block 4CFAC9 to BWS IoT. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 4C:FA:C9, it is BWS IoT hardware.

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